Tanoue began his shooting career as a freshman at St. Louis School in Honolulu, HI.[6] In 2000, his senior year at St. Louis, Tanoue captured the Boys’ State Championship.[6] He then attended the University of Nevada Reno, where he was a member of the Nevada Wolf Pack rifle team. As a member of the team, Tanoue earned seven NRA All-American honors: four air rifle and three smallbore.[7] Tanoue defeated the University of Alaska Fairbanks’ Matthew Emmons via a tiebreaker to earn the 2002 NCAA Individual Air Rifle title as a freshman with a score of 392-29x.[6][4] He was also a team captain for the Wolf Pack for three years.[8]
On the national stage, Tanoue holds two USA Shooting National Championship titles in the Men's Air Rifle event.[9] His first title came in 2004, with a score of 1286.1. Three years later in 2007, he won his second title with a score of 1284.0.
From 2003 to 2008, Tanoue was a member of the United States National Shooting Team.[8] As a member of the team, he has earned three medals in ISSF competition, two bronze and one gold. His first international medal came in 2002 at the ISSF World Championships in Lahti, Finland, where he took bronze in the Junior Men's Air Rifle competition with a score of 592.[1] In 2005, Tanoue earned his next two medals. The first came at the ISSF World Cup in Munich, Germany in the Men's Air Rifle event. Tanoue scored 597 points in the qualifying round and 102.5 points in the final round for a total of 699.5.[1] This championship finish came with an Olympic quota place, earning the United States a place in the Men’s Air Rifle competition in the 2008 Beijing Olympics.[7] His final international medal, bronze in the Men’s Air Rifle event, was earned at the 2005 ISSF World Cup Final, also in Munich, with a score of 594 in the qualifying round and 103.4 in the final round for a total of 697.4.[1]
In 2015, Tanoue was elected to the Nevada Athletics Hall of Fame.[7]